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Kayoomars Karami

Kayoomars Karami

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId: 22979495000
HIndex:
Faculty: Faculty of Science
Address: Department of Physics, University of Kurdistan Pasdaran St., P.O.Box: 66177-15175 Sanandaj - Iran
Phone:

Research

Title
Logamediate inflation in f(T) teleparallel gravity
Type
JournalPaper
Keywords
early universe, gravitation, inflation
Year
2017
Journal ASTROPHYSICAL JOURNAL
DOI
Researchers Kazem Rezazadeh Sarab ، asrin Abdolmaleki ، Kayoomars Karami

Abstract

Here, we study the logamediate inflation in the context of f(T) teleparallel gravity. f(T)-gravity is a generalization of the teleparallel gravity which is formulated on the Weitzenbock spacetime, characterized by the vanishing curvature tensor (absolute parallism) and the non-vanishing torsion tensor. We consider a f(T)-gravity model which is sourced by a canonical scalar field. Assuming a power-law f(T) function in the action, we investigate an inflationary universe with the logamediate scale factor. Our results show that although the logamediate inflation is completely ruled out by the observational data in the standard inflationary scenario based on the Einstein gravity, it can be compatible with the 68\% CL joint region of Planck 2015 TT,TE,EE+lowP data in the framework of f(T)-gravity.